- Birla Carbon
- Bridgestone Corporation
- Cabot Corporation
- Cancarb
- Continental Carbon Company
- Himadri Specialty Chemical Ltd
- Imerys Graphite & Carbon
- Jiangxi Black Cat Carbon Black Inc.
- Longxing Chemical Stock Co. Ltd
- Mitsubishi Chemical Holdings Corporation
- OCI COMPANY Ltd
- Orion Engineered Carbons
- Phillips Carbon Black Ltd
- Shandong Huadong Rubber Materials
- Tokai Carbon Co. Ltd